MB100 (Last Time Buy) 12/8/2017 Category: Products, DX Series Digital Wireless Systems, Base Stations, Wireless, DX100 Digital Wireless Systems, Base Station 2.4GHz license-free operation Supports up to 4 full-duplex or 15 push-to-transmit shared users Portable, compact design Weather-proofed gaskets Power via 100-240V AC, 12V DC, 1.5V “AA” batteries or an optional rechargeable BAT850 battery